Structure for adjusting initial position of armature by adopting nozzle thread

Abstract

The utility model relates to the technical field of electromagnetic valves, in particular to a structure for adjusting the initial position of an armature through nozzle threads. The coil is arranged in the magnetic cup, and the magnetic cup is in threaded connection with the magnetic cup cover and fixes the coil; the iron core is in threaded connection with the magnetic cup cover, and a shoulder step of the iron core is tightly attached to the magnetic cup to form a stop structure; the spring is arranged in spring holes of the iron core and the armature; the armature is in clearance fit with the iron core, and when the electromagnetic valve is in a closed state, the bottom face of the armature is attached to the top face of the nozzle under the action of the spring. When the electromagnetic valve is in an open state, the armature moves upwards till the top face is attached to the iron core, and a medium is sprayed out of an annular spraying hole of the nozzle downwards from a middle hole of the armature, so that the initial position of the armature of the electromagnetic valve can be fixed in a threaded connection mode, the development cost is saved, and the lift adjustment of the electromagnetic valve can be achieved by rotating the nozzle; and the situation that the overall use effect is influenced by opening and closing of the electromagnetic valve due to different lift and design is avoided.

Description

Technical Field

[0001] This utility model relates to the technical field of solenoid valves, and in particular to a structure that uses a nozzle thread to adjust the initial position of the armature. Background Technology

[0002] Some existing products on the market use tooling to fix the nozzle to the iron core through welding positioning, thereby determining the initial position of the armature, that is, the position of the armature when the solenoid valve is closed. However, this method is costly. On the one hand, it requires the design of corresponding tooling according to the size of the parts; on the other hand, the parts are relatively precise and need to be fixed by laser welding. Compared with traditional welding machines, laser welding machines have a higher overall equipment price, higher energy costs, and more complex maintenance.

[0003] Furthermore, the lift of a solenoid valve requires precise calculation through a series of dimensional steps, including the depth of the iron core bore, the total length of the armature, and the initial position of the armature. The initial position of the armature is determined by fixing the nozzle to the iron core. Once the iron core and nozzle are fixed by welding, they cannot be adjusted further, resulting in a very low tolerance for error. Incorrect lift adjustment affects the normal operation of the solenoid valve. A small lift leads to a low operating current, resulting in insufficient magnetic flux in the electromagnet and inability to fully engage the valve core, thus affecting the opening and closing of the solenoid valve. Conversely, a large lift leads to excessive operating current, which can easily burn out the solenoid valve coil and shorten the lifespan of the solenoid valve. Utility Model Content

[0004] The purpose of this invention is to provide a structure that uses a nozzle thread to adjust the initial position of the armature, thereby addressing the deficiencies in the existing technology. This structure allows for fixing the initial position of the solenoid valve armature through a threaded connection, saving development costs. Furthermore, it enables adjustment of the solenoid valve lift by rotating the nozzle, preventing discrepancies between the lift and the design from affecting the opening and closing of the solenoid valve and thus impacting the overall performance.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a structure for adjusting the initial position of the armature using a nozzle thread, comprising a magnetic cup cover, an iron core, a coil, a magnetic cup, a spring, an armature, and a nozzle; the coil is disposed in the magnetic cup, and the magnetic cup is threadedly connected to the magnetic cup cover to fix the coil; the iron core is threadedly connected to the magnetic cup cover, and the shoulder step of the iron core fits tightly with the magnetic cup to form a stop structure; the spring is disposed in the spring hole of the iron core and the armature; the armature and the iron core are in clearance fit, and when the solenoid valve is closed, the bottom surface of the armature fits against the top surface of the nozzle under the action of the spring; when the solenoid valve is open, the armature moves upward until its top surface fits against the iron core, and the medium is ejected downward from the central hole of the armature through the annular nozzle orifice.

[0006] Furthermore, a core sealing ring is also provided, which is placed in the sealing ring groove of the core.

[0007] Furthermore, the sealing structure on the top surface of the nozzle is pressed into the annular rubber sealing gasket on the bottom surface of the armature.

[0008] Furthermore, both the iron core and the armature have a guide hole to facilitate the installation of the spring and prevent jamming.

[0009] Furthermore, a nozzle sealing ring is also provided, which is placed inside the nozzle sealing groove.

[0010] The system comprises a magnetic cup cover, an iron core, a coil, a magnetic cup, a spring, an armature, and a nozzle. The coil is housed within the magnetic cup, which is threadedly connected to and fixed to the magnetic cup cover. The iron core is threadedly connected to the magnetic cup cover, with a step on the shoulder of the iron core tightly fitting against the magnetic cup to form a stop structure. The spring is positioned within the spring holes of the iron core and the armature. The armature is clearance-fitted to the iron core. When the solenoid valve is closed, the bottom surface of the armature, under the action of the spring, fits against the top surface of the nozzle. When the solenoid valve is open, the armature moves upward until its top surface fits against the iron core, and the medium is ejected downward from the central hole of the armature through the annular nozzle orifice. This structure allows for the initial position of the solenoid valve armature to be fixed via a threaded connection, saving development costs. Furthermore, the solenoid valve lift can be adjusted by rotating the nozzle, preventing discrepancies between the designed lift and the actual design from affecting the opening and closing of the solenoid valve and thus the overall performance. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 This is a schematic diagram of a structure of the present invention that uses a nozzle thread for adjusting the initial position of the armature;

[0013] Figure 2 This is a cross-sectional view of the structure of this utility model, which uses a nozzle thread to adjust the initial position of the armature before the lift.

[0014] Figure 3 This is a cross-sectional view of the structure of this utility model after lifting, which uses a nozzle thread to adjust the initial position of the armature.

[0015] Figure label:

[0016] 1. Magnetic cup cover; 2. Iron core; 3. Iron core sealing ring; 4. Coil; 5. Magnetic cup; 6. Spring; 7. Armature; 8. Nozzle sealing ring; 9. Nozzle. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0018] In the description of this utility model, it should be noted that the orientation or positional relationship indicated by terms such as "center", "up", "down", "left", "right", "vertical", "horizontal", "inner", and "outer" are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0019] A structure that uses a nozzle thread for adjusting the initial position of the armature, such as... Figure 1 , 2 As shown, the device includes a magnetic cup cover 1, an iron core 2, a coil 4, a magnetic cup 5, a spring 6, an armature 7, and a nozzle 9. The coil 4 is disposed in the magnetic cup 5, and the magnetic cup 5 is threadedly connected to the magnetic cup cover 1 to fix the coil 4. The iron core 2 is threadedly connected to the magnetic cup cover 1, and the shoulder step of the iron core 2 fits tightly with the magnetic cup 5 to form a stop structure. The spring 6 is disposed in the spring hole of the iron core 2 and the armature 7. The clearance fit between the armature 7 and the iron core 2 facilitates the smooth movement of the armature 7 when the solenoid valve is switched on and off. When the solenoid valve is closed, the bottom surface of the armature 7 fits against the top surface of the nozzle 9 under the action of the spring 6. When the solenoid valve is open, the armature 7 moves upward until its top surface fits against the iron core 2, and the medium is ejected downward from the central hole of the armature 7 through the annular nozzle hole of the nozzle 9.

[0020] Specifically, the threaded connection between nozzle 9 and iron core 2 allows for fine-tuning of the initial position of armature 7 after solenoid valve assembly, avoiding the high cost and non-adjustability of traditional welding methods. The overall structure is compact and intuitive, with simple and clear connections and fits between components, facilitating assembly and maintenance. In particular, the threaded connection between nozzle 9 and iron core 2 simplifies the adjustment process. Rotation of nozzle 9 precisely controls the initial position of armature 7, thereby adjusting the solenoid valve's lift. This allows the solenoid valve to better adapt to different working environments and conditions, improving its adaptability and fault tolerance. Precise adjustment of the armature's initial position and lift control help optimize the solenoid valve's operating current and magnetic flux, thus improving its opening and closing performance. Simultaneously, this design helps reduce wear and malfunctions during operation, extending its service life. Compared to traditional welding methods, the nozzle threaded connection for armature initial position adjustment eliminates the need for complex tooling and laser welding equipment, reducing production costs and simplifying maintenance, making solenoid valve maintenance simpler and faster.

[0021] As a preferred embodiment of the above, such as Figure 3 As shown, a core sealing ring 3 is also provided. The core sealing ring 3 is placed in the sealing ring groove of the core 2 and plays a sealing role to prevent gas or impurities from entering the gap between the core 2 and the coil 4 from above.

[0022] Specifically, by setting a sealing ring groove on the iron core 2 and placing the iron core sealing ring 3 within it, gas or impurities are effectively prevented from entering the gap between the iron core 2 and the coil 4 from above, enhancing the sealing performance of the solenoid valve and ensuring its stable operation in harsh environments. The sealing ring groove on the iron core 2 is used for installation. This design not only maintains the compactness of the solenoid valve but also improves its overall aesthetics and reliability.

[0023] As a preferred embodiment of the above, such as Figure 3 As shown, the sealing structure on the top surface of the nozzle 9 is pressed into the annular rubber sealing gasket on the bottom surface of the armature 7, and plays a sealing role.

[0024] Specifically, by pressing the sealing structure on the top surface of the nozzle 9 into the annular rubber sealing gasket on the bottom surface of the armature 7, a tighter sealing effect is achieved, effectively preventing gas or liquid leakage and improving the sealing performance of the solenoid valve. This not only enhances the sealing performance but also improves the stability of the structure. Furthermore, it can reduce friction and wear between the armature 7 and the nozzle 9 to a certain extent, thus extending the service life of the solenoid valve.

[0025] As a preferred embodiment of the above, such as Figure 1As shown, the iron core 2 and the armature 7 each have a guide hole to facilitate the installation of the spring 6 and prevent jamming.

[0026] Specifically, the guide hole provides a clear installation path for the spring 6. During installation, the spring 6 can be smoothly placed between the iron core 2 and the armature 7 along the guide hole without additional adjustment or positioning, making the installation of the spring 6 simpler and faster. This reduces the complexity and error rate of the installation process and improves production efficiency.

[0027] As a preferred embodiment of the above, such as Figure 1 As shown, a nozzle sealing ring 8 is also provided. The nozzle sealing ring 8 is placed in the nozzle sealing groove and plays a sealing role to prevent external gas or impurities from entering the gap between the iron core 2 and the armature 7, which would affect the operation and life of the solenoid valve.

[0028] Specifically, the nozzle sealing ring 8 significantly enhances the sealing performance between the nozzle 9 and adjacent components, fitting tightly within the nozzle sealing groove, effectively preventing the entry of external gases or impurities, and ensuring the cleanliness and stability of the internal environment of the solenoid valve.

[0029] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A structure for adjusting the initial position of the armature by nozzle thread, characterized in that it comprises a magnetic cup cover (1), a core (2), a coil (4), a magnetic cup (5), a spring (6), an armature (7), and a nozzle (9); the coil (4) is arranged in the magnetic cup (5), the magnetic cup (5) is threadedly connected with the magnetic cup cover (1) and fixes the coil (4); the core (2) is threadedly connected with the magnetic cup cover (1), and the shoulder step of the core (2) is tightly fitted with the magnetic cup (5) to form a stop structure; the spring (6) is arranged in the spring hole of the core (2) and the armature (7); the armature (7) is gap-fitted with the core (2), the bottom surface of the armature (7) is fitted with the top surface of the nozzle (9) under the action of the spring (6) when the electromagnetic valve is in the closed state; when the electromagnetic valve is in the open state, the armature (7) moves upward to the top surface fitted with the core (2), and the medium is sprayed downward from the annular nozzle hole of the nozzle (9) from the hole of the armature (7); the nozzle (9) is threadedly connected with the core (2), and the lift adjustment is realized by rotating the nozzle (9). A core sealing ring (3) is further arranged and placed in the sealing ring groove of the core (2). The sealing structure of the top surface of the nozzle (9) is pressed into the annular rubber sealing gasket of the bottom surface of the armature (7). The core (2) and the armature (7) each have a guide hole to facilitate the installation of the spring (6) and prevent jamming. A nozzle sealing ring (8) is further arranged and placed in the nozzle sealing groove. ​ ​ 2. The structure for adjusting the initial position of the armature by the nozzle thread according to claim 1, wherein ​ 3. The structure for adjusting the initial position of the armature by the nozzle thread according to claim 2, wherein ​ 4. The structure for adjusting the initial position of the armature by the nozzle thread according to claim 1, wherein ​ 5. The structure for adjusting the initial position of the armature by the nozzle thread according to claim 1, wherein ​

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